12 AI Instances, Zero File Conflicts: How Git Worktrees Make It Work

12 AI Instances, Zero File Conflicts: How Git Worktrees Make It Work 10 Claude Code instances + 2 Codex instances running simultaneously. Here's the isolation system that keeps them from colliding. The Problem: Multiple AIs Touching One Repo Instance A: editing lib/pages/landing_page.dart Instance B: editing the same file differently → merge conflict Instance C: git pull on main → picks up A's WIP → deploys broken state Branch strategy alone doesn't fix this. Multiple AIs working on the same mai